#include <bits/stdc++.h>

using namespace std;
long movimiento(long a){
    long esp = 1;
    long result=a;
    while(a != 1)
    {
        long b = a;
        if(a % 2 != 0)
        {
            for(long i = 3 ; i * i <= a ; i = i + 2)
            {
                if(a % i == 0)
                {
                    b = i;
                    break;
                }
                //cout << " valor de i: " << i << "\n";
            }
        }
        else
            b = 2;
        esp = b;
        result = a / esp + result;
        a = a / esp;
       /* cout << " valor de esp: " << esp << "\n";
        cout << " valor de re: " << result << "\n";
        cout << " valor de a: " << a << "\n";*/
    }
    return result;
}

long longestSequence(vector <long> a) {
    long count=0;
    for(int i=0;i<a.size();i++){
        count+=movimiento(a[i]);
    }
    return count;
}

int main() {
    int n;
    cin >> n;
    vector<long> a(n);
    for(int a_i = 0; a_i < n; a_i++){
       cin >> a[a_i];
    }
    long result = longestSequence(a);
    cout << result << endl;
    return 0;
}